I recently demoted and decommisioned a domain controller then promoted a new server and installed dns. After I did this the following error appears after I reboot: Event ID 4515 The zone mydomain.com was previously loaded from the directory partition MicrosoftDNS but another copy of the zone has been found in directory partition DomainDnsZones.mydomain.com. The DNS Server will ignore this new copy of the zone. Please resolve this conflict as soon as possible. If an administrator has moved this zone from one directory partition to another this may be a harmless transient condition. In this case, no action is necessary. The deletion of the original copy of the zone should soon replicate to this server. If there are two copies of this zone in two different directory partitions but this is not a transient caused by a zone move operation then one of these copies should be deleted as soon as possible to resolve this conflict. To change the replication scope of an application directory partition containing DNS zones and for more details on storing DNS zones in the application directory partitions, please see Help and Support. --- I found the following fix at microsoft http://support.microsoft.com/kb/867464 -- It appears that when I promoted and installed DNS on the new server it somehow created a new zone. The new zone appears to be active in DC=mydomain, DC=com. When I add new computers to the domain they appear there. The original zone appears in DC=DomainDnsZones, DC=mydomain, DC=com and when I add new records they do not appear there so it appears that it may not be active. I have two Domain controllers running DNS the duplicate zones appear on both. This is a production environment that can't afford downtime. Can I fix this with out downtime? I am wondering if I delete the original zone that does not appear to be in use what will the repercussions be? Would I have to delete it off both servers? If I delete it on one will it just replicate back or will it replicate the "dead" zone? I was going to delete the dead zone off both servers then restart dns on both servers.. Could anything still be dependent on this original zone?? or if it appears to be loading the other zone would I be safe to delete it? Any suggestions would be appreciated. Thank you,